This is one of the most popular Doom source ports. It is available for DOS, Windows, Linux and Mac OS X, and should build on any POSIX platform which supports SDL. It enhances Doom with things like TCP/IP networking, OpenGL renderer, Heretic support and much more.

xine is a free multimedia player. It plays back CDs, DVDs, and VCDs. It also decodes multimedia files like AVI, MOV, WMV, and MP3 from local disk drives, and displays multimedia streamed over the Internet.

Mjpeg tools is a suite of programs which support video capture, editing, playback, and compression to MPEG of MJPEG video. Edit, play and compression software is hardware independent. Capture supports MJPEG hardware (Buz,DC10+ etc). and V4l2 devices.

Udis86 is an easy-to-use minimalistic disassembler library for the x86 and x86-64 instruction set architectures. The primary intent of the design and development of udis86 is to aid software development projects that entail binary code analysis.

The NASMX Project is a collection of macros, includes and examples, which are meant to help NASM programmers develop 32-bit and 64-bit BSD, Linux, Windows, and XBOX software in a fraction of the time it normally takes.

A cross-platform Duke3D (Duke Nukem 3D) port which provides many new features for mod authors, including an enhanced scripting system and OpenGL renderer. Go to http://www.eduke32.com for downloads and http://bit.ly/dn_3d to get the game!

MVDSV (MultiView Demo Server) - most popular QuakeWorld Server in the world with it's ability to record every player's point of view in a server side demo. Includes: mvdsv, qwdtools (demo tools), qwdplayer (client - removed, use http://ezquake.sf.net).

Avifile is a library that allows you to read and write compressed AVI files (Indeo? Video, DivX, etc.) under x86 Linux. (De)compression is performed with Win32 DLLs. It includes AVI player, video4linux-compatible capture program and simple AVI recompres

optronic is a group of geeks (mostly coders, but a few of us are artists
aswell).
On this page you can find almost all of our source code, and sometimes even
something not entirely different from documentation.

Embedded PowerPC Bootloader Project, especially for Embedded PowerPC boards.
The code for this project is frozen. Development continues with the "U-Boot" project
(Universal Boot Loader, see http://sourceforge.net/projects/u-boot ).

Simontacchi is a Winboard/UCI compatible chess engine that intends to grow via development community involvement. The goal of the project is to create a chess engine that rivals the strongest commericial and amateur programs.

The Shark CGI Function simplifies programming CGI's in C. It extracts variables and contents from GET, POST & multipart/form-data forms (including file uploads and cookies) and makes them accessible as environment variables. See homepage for more info.